Switch-lock.



G. H. GUINN.

SWITCH LOCK. APPLICATION HLED MAR 3. 1915- 1,176,051 Patented Mar. 21,1916.

THE CQLUMBIA PLANOflRAPl-l 2a.. WASHINGTON. D. c.

GEOItGE H. GUINN, OF CINCINNATI, OHIO, ASSIGNOR TO CHARLES S. GUINN, 0FWAYNESZBURG, KENTUCKY.

SWITCH-LOCK.

To all whom it may concern:

Be it known that I, GEORGE H. GUINN, a citizen of the United States,anda resident of the city of Cincinnati, in the county of Hamilton andState of Ohio, have invented certain new and useful Improvements inSwitch-Locks, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification.

My invention relates to locking devices for street railway switches inparticular, although it may be applied to general railroad work as well.In locks of this nature, the effort is to provide a means for insuring apositive complete throw of a switch, and for so locking the switchtongue after the throw that it will require a positive operation tothrow it back again. 7

It is the object of my invention to provide a locking deviceoperatedfrom the switch tongue itself so as to provide for cars coming both wayson a single track,

and locked by toothed disks,which is completely inclosed in a weatherand dirtproof box of convenient size, and capable ofbeing packed withfluid grease orthe like. This I- accomplish by that certain constructionand arrangement of parts to be hereinafter more specifically pointed outand claimed wherein a rod from the switch is passed through stuffingboxes into the lock casing, andthrows the locking disks referred to bymeans of an eccentric stud, as will be described.

In the drawings, Figure 1 is a perspective j view of the switch andlock. Fig. 2 is a longitudinal section of the lock. Fig. 3 is a verticalsection of the lock taken along the axial line of the switch rod, whichfor clearness is shown in elevation. Fig. 4 isa per spective view of thesliding block. Fig. 5 is a perspective view ofthe slideway for theblock.

The switch shown in the drawings is the ordinary street railway switch.having the switch tongue 1, which is to be thrown by the inserting of avswitch iron, in the space between the side of the tongue andone of therail members 2, 2, of the switch. To the web of one of the rails issecured a box 3, preferably of iron, which has large bolts 4, 4, whichpass through the rail for so mounting the box. A rod 5 is secured to theswitch Specification of Letters Patent. Patented Mar. 21, 1916.

Application filed March a, 1915. Serial No. 11,685.

the rail to which the box is mounted, and

enters the box near its upper left hand corner through a stuffing box 7.A guide rod 8 extends out from the adjacent front corner of the box,through another stufiing box 9, and a cap 10 is fitted over the boss 11in the box that the stufling box is mounted in. These two rods are theonly members of the lock that pass from the outside into the box, andfrom the description above it is plain that stufling boxes completelyprotect their entrance. The top 12 of the box is bolted down by means ofcountersunk bolts 13, 13, and the box may be filled with oil or grease,that will preserve the lock in perfect condition after the severestflood or freezing test.

The structure of the lock is as follows. A framework comprising endplates 14 and 15 and connected by rods 16 is set into the box, andsuitably secured in a sidewise position, and resting on lugs 17 17, atfour points on the bottom of the box. Secured to the forward end piece14 is a fixed toothed disk 18, which has a central aperture in which isjournaled the tubular member 19. A disk 20, having an eccentric stud 21on of the tubular member 19. mounted on the other end piece 15 andextends up into the inner end of the tubular memher, said tubular memberbeing adapted to slide up and down on said rod.

A toothed disk 24 is pinned at 25 to the tubular member 19 and a spring38 secured to'the end piece-15 bears withits other end against thecollar portion of said toothed disk 24. The eccentric pin 21 is to beactu ated-by the rod 5 connected to the switch to-n ue as described andthis movement will turn the disk 20, the tubular member 19 and force thetoothed disk mounted on the said member downwardly against its springpresthe fixedtoothed disk. A proper positioning of the eccentric studand proper sized teeth on the disks, is desired so that a throwing ofthe switch tongue from one side of the switch to the other will resultin a moving of the two toothed disks with relation to each other justthe distance of one tooth. A partial throwing of the switch tongue willthen bring the apices of opposing disk sure before it can be free frommesh with a ofTthe two, rods are flattened out, and over teeth adjacentto each other and the spring pressure will then throw the switch armover the rest of the distance, without further -work on the part of theoperator of the switch. The springs will be strong enough to prevent anyaccidental j arring from caus ing the switch to split and the switchwill' be looked, as the term is employed in this art. -The rod runningfrom the switch tongue to the locking device has a straight line motionas it must pass through a Stu fiing boxias' described,and-accordinglymeans are-providedto transform straight into circular motion by means ofthe connection of;

said rod with the eccentric stud heretofore mentioned. Theguide rodwhich, asdescribed, has a mounting at the opposite side of the box fromthe rod-to the switch tongue,

is-sjecured to the latter rod and'the two form' a suitable connectionfor the eccentric stud, for the purpose mentioned. The ends 27the-topand bottom of the flattened portions aremounted plates 28,28,said platesbeing} connected; together by means of'pins or bolts 29; thatpass through the ends of the rods;

A block 30, of a size toslide in the space between the flattened rodends and the top,

and bottom connecting and spacingplates now described, is provided,having" shoulders 31 at. each side to bear agains the inner This .-,sliide up and down to take up the motion necessary to transform thestraight into the circular thrust desired, and thestud'will be;

free-torotate'in the; block, and to slide in the block so as to allowthe, disk to ride in ;Wi't;h: the lockingdisk, and tubular member.

When a car-having flanged, Wheels, as, customaryt-rijdesover the switchc ming from the branching tracks onto the single track ofthe switch thetongue will be forced over aby-the-flangge of the w heels. Otherwise theoperator of acar must insert his iron lin the switch positively throwthe tongue :;.;toothed disklock, and its chief advantage liesin the factthat it is absolutely protect- Therehave been some devices working on atoothed disk principle in the art, but since itis a requisite for'such astructu-reto be securely. protected from weather and, street copies fthis patent may be obtained for five cents each, by ll s i washingtonhlfi I f- 1 conditions, there has not been much success as aresult of, their use.

There are many modifications of my device which the mechanic Skilled {intheart structure in the device itself such as f9r exam-plain the methodof transmission from the switch rod to the eccentric stud of' thedevice. These, however, are considered to be developments which itisonlynecessary could make to adapt the protected ratchet deviceforother railroad work, where other -meansof turning the switches areemployed, such as levers and the like.

to mention to avoid implied'limitations in the claims that follow, tospecific; structure.

where the same'is notdirectlymentioned in the said claims. t a

. Having thus described my invention, what Iclaim as new and desire tosecure by Leta tersPatent, is p L In a device; ofthecharacter described;

in; combination witha; switch movable mem ber, a rod connected thereto,an inclose chamber forming member, an aperture in saidc'hamber memberfor the rod, astufl'n ing'box therefor, a fixed toothed member-in saidchamber, a rotatable, toothed member spring pressed into connectiontherewith and slidingconnection between said roolv andv the movablerotatable member, for the purg P 5 described, H N p I 2: In combination,with a movabl it h member, an inclo'sed chamber forming mem-.

.ber, apertures at two sides of said chambermember, a rod passingthrough 7: each aper.-

ture, stuiflng boxes for said-apertures, one i lOO s of said rodsconnected to themovable switchmember, a toothed disk lock, and

whereby said rod engagesjsaid lock.

a. ln j'combination with ya mfovablta switch member,an inclosecl chamberforming me mber,f-ape' rtnres at two sides of; said chamber member,a'rod passing through each aper -:v

- ture,flstuifing boxes for :said apertures, one 1 V ,1: of. saidrodsconnect'ed to-the movable switch :The device is b'lllll}. around'a'slmple' member, "a rotatable toothed disk lock, and

means whereby said grod slidably engages,- sa-id-lo'ck. v edtrom'becoming cloggedlwith mud or ice.

, v oEoReE'oUI-NN.

' .Attest: 1

-M. T. BEALL,

1 K. SMITH.

ficeznmissiqne nof Patents.

